43084989 has 36 divisors (see below), whose sum is σ = 66865500. Its totient is φ = 26725248.

The previous prime is 43084963. The next prime is 43084991. The reversal of 43084989 is 98948034.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6579225 + 36505764 = 2565^2 + 6042^2 .

It is not a de Polignac number, because 43084989 - 2⁷ = 43084861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43084939) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 289087 + ... + 289235.

It is an arithmetic number, because the mean of its divisors is an integer number (1857375).

Almost surely, 2^43084989 is an apocalyptic number.

It is an amenable number.

43084989 is a deficient number, since it is larger than the sum of its proper divisors (23780511).

43084989 is a wasteful number, since it uses less digits than its factorization.

43084989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 43084989 is about 6563.9156758752. The cubic root of 43084989 is about 350.5704683226.

The spelling of 43084989 in words is "forty-three million, eighty-four thousand, nine hundred eighty-nine".